ReasonJun

// this binding // 'this' is dynamically determined by the caller! function Hello(name) { this.name = name; this.printName = function () { console.log(`My name is ${this.name}`); }; } function YourName(name) { this.name = name; this.printName = function () { console.log(`Your name is ${this.name}`); }; } const youjun = new Hello('youjun'); const neo = new YourName('neo'); youjun.printName(); // ..